In a recent attempt to clarify the basis on which commercial and domestic buildings in Roman provincial towns were laid out, it was suggested that two different units of measurement had been employed in the planning of the Insula xiv timber buildings at Verulamium. It appeared that in Periods I, IIA and IIB the block had been planned in terms of the pes Drusianus, but that in Period IIC, c. A.D. 130, the pes Monetalis had been adopted and remained in use throughout subsequent periods.
